1 files changed, 79 insertions, 0 deletions
diff --git a/libcxx/test/std/input.output/file.streams/fstreams/ofstream.assign/member_swap.pass.cpp b/libcxx/test/std/input.output/file.streams/fstreams/ofstream.assign/member_swap.pass.cpp
new file mode 100644
index 00000000000..519b84fb1ab
--- /dev/null
+++ b/libcxx/test/std/input.output/file.streams/fstreams/ofstream.assign/member_swap.pass.cpp
@@ -0,0 +1,79 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// <fstream>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_ofstream
+
+// void swap(basic_ofstream& rhs);
+
+#include <fstream>
+#include <cassert>
+#include "platform_support.h"
+
+int main()
+{
+    std::string temp1 = get_temp_file_name();
+    std::string temp2 = get_temp_file_name();
+    {
+        std::ofstream fs1(temp1.c_str());
+        std::ofstream fs2(temp2.c_str());
+        fs1 << 3.25;
+        fs2 << 4.5;
+        fs1.swap(fs2);
+        fs1 << ' ' << 3.25;
+        fs2 << ' ' << 4.5;
+    }
+    {
+        std::ifstream fs(temp1.c_str());
+        double x = 0;
+        fs >> x;
+        assert(x == 3.25);
+        fs >> x;
+        assert(x == 4.5);
+    }
+    std::remove(temp1.c_str());
+    {
+        std::ifstream fs(temp2.c_str());
+        double x = 0;
+        fs >> x;
+        assert(x == 4.5);
+        fs >> x;
+        assert(x == 3.25);
+    }
+    std::remove(temp2.c_str());
+    {
+        std::wofstream fs1(temp1.c_str());
+        std::wofstream fs2(temp2.c_str());
+        fs1 << 3.25;
+        fs2 << 4.5;
+        fs1.swap(fs2);
+        fs1 << ' ' << 3.25;
+        fs2 << ' ' << 4.5;
+    }
+    {
+        std::wifstream fs(temp1.c_str());
+        double x = 0;
+        fs >> x;
+        assert(x == 3.25);
+        fs >> x;
+        assert(x == 4.5);
+    }
+    std::remove(temp1.c_str());
+    {
+        std::wifstream fs(temp2.c_str());
+        double x = 0;
+        fs >> x;
+        assert(x == 4.5);
+        fs >> x;
+        assert(x == 3.25);
+    }
+    std::remove(temp2.c_str());
+}